The new Ether Light XT Insulated Air Sleeping Mat brings Air Sprung Cell comfort to the realm of thicker air sleeping mats. Quiet and lightweight, this sleeping mat uses two types of insulation to provide three-season warmth. The XT Air-Sprung Cells are constructed using loops of a strong, flexible material to provide a plush sleeping experience. The uprated 30D / 40D face fabric is quiet and durable, and the lamination technology continues Sea to Summit's class-leading reliability.